US 2026/0200816 A1 · MULTI-REACTOR SYSTEMS AND METHODS FOR PROPYLENE PRODUCTION

Abstract

Systems and methods for the production of propylene from C4 raffinate hydrocarbon streams. The method may include supplying a C4 raffinate hydrocarbon stream to a metathesis reactor to produce a metathesis outlet stream and separating the plurality of C5+ hydrocarbons from the propylene and the one or more C4 hydrocarbons in the metathesis outlet stream to produce a C5+ feed stream and a first propylene-rich stream. The method may further include supplying the C5+ feed stream to a cracking reactor to produce a cracked outlet stream containing propylene and the one or more C4 hydrocarbons. The method may further include separating the propylene from the one or more C4 hydrocarbons in the cracked outlet stream to produce a second propylene-rich stream and a C4-rich stream, and recycling the C4-rich stream to the metathesis reactor as part of the C4 raffinate hydrocarbon stream.

Claims15

Dependent claims

A method for production of propylene, the method comprising:

supplying a C4 raffinate hydrocarbon stream to a metathesis reactor to produce a metathesis outlet stream, the C4 raffinate hydrocarbon stream containing substantially one or more C4 hydrocarbons and the metathesis outlet stream containing a plurality of C5+ hydrocarbons, propylene, and one or more C4 hydrocarbons;
separating the plurality of C5+ hydrocarbons from the propylene and the one or more C4 hydrocarbons in the metathesis outlet stream to produce a C5+ feed stream and a first propylene-rich stream;
supplying the C5+ feed stream to a cracking reactor to produce a cracked outlet stream containing the propylene and the one or more C4 hydrocarbons;
separating the propylene from the one or more C4 hydrocarbons in the cracked outlet stream to produce a second propylene-rich stream and a C4-rich stream;
and
recycling the C4-rich stream to the metathesis reactor as part of the C4 raffinate hydrocarbon stream.

3 more elements

A system for production of propylene, the system comprising:

a metathesis reactor operable to receive a C4 raffinate hydrocarbon stream and produce a metathesis outlet stream, the C4 raffinate hydrocarbon stream containing substantially one or more C4 hydrocarbons and the metathesis outlet stream containing a plurality of C5+ hydrocarbons, propylene, and one or more C4 hydrocarbons;
a plurality of separation columns in fluid communication with the metathesis reactor and a cracking reactor, the plurality of separation columns operable to receive the metathesis outlet stream and produce a C5+ feed stream and a first propylene-rich stream;
and
the cracking reactor in fluid communication with the plurality of separation columns and operable to receive the C5+ feed stream and produce a cracked outlet stream containing the propylene and the one or more C4 hydrocarbons, the cracked outlet stream being supplied to the plurality of separation columns whereby the propylene is separated from the one or more C4 hydrocarbons in the cracked outlet stream to produce a second propylene-rich stream and a C4-rich stream.

1 more element

Dependencies are inferred from the claim text.

Multi-reactor systems and methods for propylene production

Life of this patent

Multi-reactor systems and methods for propylene production

Life of this patent

Abstract

Claims15